Fur pelt or skin stretching mechanism



Sept. l2, i944.

C. H. DONNER ET A1.

FUR FELT 0R SKIN STRETCHING MEcHANIsM ,wf/ar, jazzy/Py* Sept 12, 1944 c. H. DONNER ETAL 2,357,884

FUR PELT OR SKIN STRETCHING MECHNISM Filed Nov. ll, 1942 5 Sheets-Sheet 2 IN VENTORS Sept. 12, 1944. c. H. DONNER ETAL FUR FELT OR SKIN STRETCHING. MECHANISM Filed Nov. l1, 1942 3 Sheets-Sheet 5 1NVENTOR5. am TMA? I,

, of hat bodies.

Patented Sept. 122, 1944 FUR PELT 0R SKIN STRETCHING y'MECHANISM Carl H. Donner, Summit, and William. Wbcr, Nutley, N. J., assignors to The ChapaluDonrner Corporation, Newark, N. J.,- a corporation of New vJersey Application November 11, 1942, Serial No. 465,228

12 Claims.

This invention relates to mechanism for use in the preparation of fur employed in the manufacture of felt hats or in the production of other felt products; and the invention has reference, more particularly, to mechanism for stretching I andA smoothing fur pelts or skins preparatory to cutting away the fur or hair therefrom or preparatory to any other desired use of the stretched and smoothed pelt-s or skins.

The fur of rabbits, hares, nutria, muskrat,

beaver and similar animals is largely used as a fur for felting, and especially for the felting Quantities of the fur pelts or skins of these animals are ordinarily packed in n more or less compressed bales or bundles for shipi' mentrfrom the source of supply thereof to fur processors. The fur processors prepare the fur by carroting, dyeing and like treatments, and

thereupon cut the fur from the skin, thereby making the. same-*ready for use by the manu- 4 facturer of felt hats or other feltl products.

Fur pelts or skins, when baled for shipment to the processonbecome more or less wrinkled and otherwise distorted in the packing, and tend to dry out and set or more ojr less stiffen in such condition. Due to such wrinkling or like distortion, when va pelt or skinis subjected to a cutting machine for removal of the fur from the skin, thecutting knives either fail to reach the bases of the hairssovas, to cut them olf close to the skin, or the knives` cut off shreds of skin with the fur without severing the hair therefrom, either of which occurrencev results in considerable loss and waste of valuable fur. vSuch occurrences would be substantially avoided; or at least considerably limited, were the wrinkles or like distortions of the skin smoothed out and removed, so as to leave the skin stretched into substantially fiat and smooth condition; in which condition the cutting machine knives can best reach intoV and severthe hairs at points very close to the skin surface, andl with minimum risk of chipping the skin.

Having these things in View, it is an object of this invention to providev a novel mechanism I for stretching and smoothing fur pelts or skins.

The invention hasy for a further object to provide a fur pelt or skin stretchingV and smoothing mechanism which is quick acting and efficient;

and which operates to stretch andV smooth the skin progressively from aI medial portionV outwardly thereof in opposite directions, so that the stretching and smoothing actiony is equalized 'and uniformly applied without risk of tearing or otherinjury to the skin or fur.

vother,et-jettent this invention, not at this ltime more particularly' enumerated, will be understod from the renewing detaned description Of-thesamie An illustrative embodiment of a fur pelt or skin stretching mechanism according to this invention'is shown inthe accompanying drawings,

in which:

Figi is an'end elevational view thereof; Fig. 2 is aside elevational view thereof; Fig. 3 is a fragmentary cross'fsectional viev'rH thereof; and

Fig. 4 is' a fragmentary horizontal sectional View, taken on lined-4 in Figf2.

`-Similar characters of y,reference aree'mployed inY the above"descibedview's, to indicatecorrespending parts. y i

Referring to said drawings, the reference char.. acter I0 indicates a suitableframework for supporting the operative parts of the mechanism;

said framework preferably including a lower horizontal platform II and an upper horizontal platform l2.

Mounted on the framework above the upper platform I2 is a vertically reciprocable presser member or table I3, which is shaped to provide oppositely extending, downwardly and laterally inclined work supporting faces I4` angularly divergent from a longitudinal medial portion I5 thereof. Said presser member or table I3' is affixed, preferably at a point midway between its ends, upon the upper end of aA perpendicular elevator shaft I6. Said elevator shaft is slidably supported in suitable guide bearings 'IIr respectively aiiixed to the framework platforms II' and let arms y2| are vertically spaced frameplates 22 and 23.

Disposed above the presser member or table I3, so as to be. aligned With andr opposedt'othe `longitudinal medial portion I'5 of the'latt'er, is

a vertically yieldablewclamp bar 24. Said' clamp .bar is carried ,by spacedf vertically movable slide bars 25, which pass through and are'guided by table I3, as may be most convenient to the operator. The pelt or skin is so arranged that the thicker head end a thereof lies toward the left end of the presser member or table, and the left end portions of the rolls 33 (as viewed in Fig. 2) are tapered toward their extremities, as at 62, whereby to provide clearance space so that said rolls 33 may pass over said thicker head end a without disturbing or interfering with the operative Contact and pressure of the main portions of the rolls upon the pelt or skin.

The pelt or skin being thus operatively spread upon the pressermember or table |3, the operator thereupon depresses the foot treadle lever 50 so as to throw in the clutch 45, and thus cause transmission of driving power to the cam drum 35. As the cam'drum 35 rotates, its cam member 42 exerts an upward thrust upon the elevator shaft I6, whereby the presser member or table I3 is caused to rise. As such rising movement of the presser member or tabl-e I3 is initiated, it rst engages the weight pressed clamp bar 24, whereby thevmedial portion of the pelt or skin carried thereby is firmly clamped and held against lateral shift'between the same and said clamp bar. Thereafter, as the presser member or table continues to rise, it engages the rotating stretching and smoothing rolls 33 so that the latter contact and press against the pelt or skin A respectively at opposite sides of the m-edial portion thereof. Continued rising movement of the presser member or table, due to the angularly divergent work supporting faces I4 thereof, causes the swingable frames by which the rolls 33 are carried tov respectively swing outward, and thereby causes the rotating rolls 3'3v to travel outwardly over the pelt or skin pressed thereagainst by the upward thrust. of the presser member or table. Such outward travel of the rolls 33, in conjunction with the outwardly sweeping rotative Contact and pressure thereof upon the pelt or skin A, exerts a strong stretching and smoothing eiect upon the latter in opposite lateral directions leading from its medial portion, so that the wrinkles or distortions thereof are quickly ironed out leaving the skin substantially smooth and flat (see dotted representations in Fig. 3). To increase the, frictional engagement of the rolls 33 with the pelt or skin A, and thereby the efficiency: of the stretching and smoothing action thereof, the surfaces of said rolls may be suitably roughened, as, e. g., by longitudinally ribbing or uting the same, as shown. An additional advantage of so surfacing said rolls 33', is that the same also serve during the stretching and smoothing action to remove grease from the pelt or skin, when such treatment is desirable.

The stretching and smoothing action continues until the pelt or skin has been entirely traversed by the rolls 33, and said rolls pass off of the sides of the presser member or table I3, as the. latter approaches the Alimit of its upward movement.

As the rolls 33 are pushed off the presser memberor table I3, the swingable frames carrying the same are thereby caused to reach the limit of their outward swinging movement, which movement swings inwardly the tail members 3| of the frame lever arms 28 to their inward limit. Releasable detent means is provided for engaging the inswung tail members 3|, whereby toretain the swingable frames and their rolls- 33 in outswung positions, while the presser member or 75 to normal lowered position.

table I3 completes its upward movement and thereupon, as controlled by the actuating cam member 42, reverses its movement and descends Said detent means comprises spring urged latch members 63 which are fixed on rock shafts 64 journaled in and between the frame bracket arms 2|. Aixed to the tail members 3| of the swingable roll vcarrying frames are projecting catch-pieces 65 which are engageable by the latch members 63. Carried by a bracket 66 extending from an end of the presser member or table I3 is an upstanding post 61 which accompanies the up and down movement of the presser member or table I3. Aflixed to said post 61 is a laterally projecting trip-piece 68. When the presser member or table occupies itsA normal lowered position, said trip-piece 68 engages the tail ends of adjacent latch members 63, at one end of the machine, whereby to rotate the rock shafts 64 and thereby upswing all the latch members 63 to released positions (see Fig. 1). When the presser member or table I3 begins its upward operative movement, said trippiece 68 is carried away from the latch-members 63, thereby permitting the same, as yieldably tensioned by their springs, to swing down to operative positions, as determined by stop projections 6.9, ready to engage the catch-pieces 65 of the swingable frame tail members 3|, so as to hold the swingable frames and their rolls 33 outswung while the presser member or table I3 returns to normal lowered position (see full line representations in Fig. 3). As soon` as the presser member or table I3 arrives at its normal lowered position, the trip-piece 68 again releases the latch members 63, so that the swingable frames and their rolls 33 may, under the inuence of the pull springs 34, return to their normal inswung positions above the presser member or table. Upon these occurrences, the clutch 45 is released, whereupon the stretched and smoothed pelt or skin A is removed, and replaced by another pelt or skin desired to be treated by a repetition of the described machine operations.

Optionally, additional means may be provided for guiding and holding the clamp bar 24 true to its path of ascent and descent cooperatively with the operation of the presser member or table I3. Illustratively, as shown, such additional guide means comprises a guide channel 'I0 formed in the post 61 at one end of the machine, in which is-slidably engaged one end extension 'Il of the clamp bar 24; and a stationary channeled guide rod 'I2 dependent from a support I3 which is afxed to a bracket arm 2| at the opposite end of the machine, in the guide channel of which guide rod 12 is slidably-engaged the opposite end 14 of said clamp bar 24.

We are aware that various changes could be made in mechanism as above described and as shown in the accompanying drawings without departing from the scope of this invention as defined in the following claims. It is therefore intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative'and not in alimiting sense.

We claim:

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1r 0:11am L 1.1 )Umral 2"..1 1121 112 111111111 2,1 m1111111 1t 11 11;; ma 1 s 11121: (L 111 2111111111; 11.1921111111 i. 111m: 1111 '.111 s: Ltflbl e1 '11112111 e; 1l 11i-t .111.1211511 1:' 111 :Dalmine 1. ;i 111s 12111112111 a l1' r .11111112 .I n'lmwedsc 111111151111111 1. s 1 xssrehmigf 12.1 11i d1 3001311119 L1r1 1131 .sucqnmmtm 1w 1111111 1 L 1111114; 'Ici 2111.111111; .11:1 s111125: Lslilgrwule :11 '111111.12111 311111; musicale c7. 1V 5g :.ezr liLmlL'LniemLaz Isae: o E( 11 151211' d1at219 .e1 1111211001: 111.11m '11m-1 '-1 erse the parts of the work supported thereon, a pair of dependent normally inswung but outwardly swingable pivoted frames by which said rolls are respectively carried, means to yieldably urge said frames and their rolls to normally inswung positions above the lowered table and to thrust said rolls against Athe table supported work while they traverse the latter during outward swinging movement of their carrying frames induced by ascending movement of the table, and means for rotating said rolls in directions whereby to apply stretching and smoothing effect to the supported work outwardly from the medial portion thereof.

10. In mechanism for the purposes described, a table having laterally and oppositely downwardly inclined work supporting faces obtusely divergeht from its medial longitudinal portion, a vertically reciprocable elevator means to carry said table, a rotary cam means fo-r actuating said elevator means, power transmission means for driving said cam means including a normally released clutch and means for manipulating said clutch, a work clamping means aligned with and opposed to the medial longitudinal portion of said table, means to yieldably urge said clamping means toward the table, means to space said clamping means from the table when the latter occupies its normal initial lowered position,

stretching and smoothing rolls cooperative with each inclined face of said table adapted to traverse the parts of the work supported thereon, a pair of dependent normally inswung but outwardly swingable pivoted frames by which said rolls are respectively carried, means to yieldably urge said frames and their rolls to normally inswung positions above the lowered table and to thrust said rolls against the table supported work while they traverse the latter during outward swinging movement of their carrying frames induced by ascending movement of the table, and means for rotating said rolls in directions whereby to apply stretching and smoothing effect to the supported work outwardly from the medial portion thereof, said latter means comprising roll driving power transmission means including a telescopic drive shaft for each roll and universal joint connections between each roll and its telescopic shaft and between each telescopic shaft and said roll driving power transmission means.

11. In mechanism for the purposes described, a table having laterally and oppositely downwardly inclined work supporting faces obtusely divergent from its medial longitudinal portion, a vertically reciprocable elevator means to carry said table, a rotary cam means for actuating said elevator means, power transmission means for driving said cam means including a normally released clutch and means for manipulating said clutch, a workv clamping means aligned with and opposed to the medial longitudinal portion of said table, means to yieldably urge said clamping means toward the table, means to space said clamping means from the table when the latter occupies its normal initial lowered position, stretching and smoothing rolls cooperative with each inclined face of said table adapted to traverse the parts of the work supported thereon, a pair of dependent normally inswung but outwardly swingable pivoted frames by which said rolls movement of their carrying frames induced by ascending movement of the table, each carrying frame having an upwardly extending tail arm, detent means operative to engage said tail arms when inswung whereby to hold said frames outswung with the rolls disposed beyond the path of table movement, to which positions said rolls are moved by ascent of the table, detent trip means carried by the table and operative to release said detent means when the table occupies its lowered position, whereby to thereupon permit return of said frames and rolls to normal inswung positions, and means for rotating said rolls in directions whereby to apply stretching and smoothing effect to the supported work outwardly from the medial portion thereof.

12. In mechanism for the purposes described, a table having laterally and oppositely downwardly inclined work supporting faces obtusely divergent from its medial longitudinal portion, a vertically reciprocable elevator means to carry said table, a rotary cam means for actuating said elevator means, power transmission means for driving said cam means including a normally released clutch and means for manipulating said clutch, a work clamping means aligned with and opposed to the medial longitudinal portion of said table, means to yieldably urge said clamping means toward the table, means to space said clamping means from the table when the latter occupies its normal initial lowered position, stretching and smoothing rolls cooperative with each inclined face of said table adapted to traverse the parts of the work supported thereon, a pair of dependent normally inswung but outwardly swingable pivoted frames by which said rolls are respectively carried, means to yieldably urge said frames and their rolls to normally inswung positions above the lowered table and to thrust said rolls against the table supported work while they traverse the latter during outward swinging movement of their carrying frames induced by ascending movement of the table,'each carrying frame having an upwardly extending tail arm, detent means operative to engage said tail arms when inswung whereby to hold said frames outswung with the rolls disposed beyond the path of table movement, to which positions said rolls are moved by ascent ,of the table, detent trip means carried by the table and operative to release said detent means when the table occupies its lowered position, whereby to thereupon permit return of said frames and rolls to normal inswung positions, and means for rotating said rolls vin directions whereby to apply stretching and smoothing effect to the supportedv work outwardly from the medial portion thereof, said latter means comprising roll driving power transmission means including a telescopic drive shaft for each roll and universal joint connections between each roll and its telescopic shaft and between each telescopic shaft and said roll driving power transmission means.

CARL H. DONNER.

WILLIAM C. WEBER. 

